yuko (uc yuk), z/x, official art, 1girl, arm up, armpits, bikini, blue bikini, blue sky, breasts, cloud, cloudy sky, copyright notice, flower, goggles, grey hair, hair ornament, hairband, hibiscus, innertube, light particles, long hair, lower teeth only, navel, nu (z/x), ocean, open mouth, outdoors, petals, round teeth, sky, small breasts, solo, sparkle, splashing, swim goggles, swim ring, swimsuit, teeth, two side up, unworn goggles